<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
	</head>
	<body>
		<div id="app">
			<div>{{counter}}</div>
			<div v-once>{{counter}}</div>
			<button @click="counter++">++</button>
		</div>
		<script type="text/javascript">
			new Vue({
				el: '#app',
				data: {
					counter: 0
				}
			})
		</script>
	</body>
</html>
